ASME SA213 TP304L Stainless Steel Seamless Bend U Boiler Tube
GNEE provides high-quality ASME SA213 TP304L stainless steel seamless U bend tubes, manufactured from 304L low-carbon austenitic stainless steel and formed through precision bending processes, followed by solution annealing + pickling and passivation treatments to achieve a stable austenitic structure. These tubes offer excellent intergranular corrosion resistance, with the ability to continuously withstand 900°C and temporarily endure up to 1100°C.
ASME SA213 TP304L stainless steel pipe Specifications
| Sizes / Thickness |
Sizes and thicknesses usually furnished to this specifification are 1 ⁄ 8 in. [3.2 mm] in inside diameter to 5 in. [127 mm] in outside diameter and 0.015 to 0.500 in. [0.4 to 12.7 mm], inclusive, in minimum wall thickness or, if specifified in the order, average wall thickness.
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| Manufacture | Tubes shall be made by the seamless process and shall be either hot finished or cold finished, as specified. | ||||
| Length | As required by clients | ||||
| Surface Condition |
1.Cold-fifinished steel tubes shall be free of scale and suitable for inspection. A slight amount of oxidation is not considered scale.
2.Hot-fifinished steel tubes shall be free of loose scale and suitable for inspection.
3.Stainless steel tubes shall be pickled free of scale.When bright annealing is used, pickling is not necessary.
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| Bending Radius | From 1.5*OD(Outside Diameter) To 1500mm, ≤1.5*OD,necessary To agree precision of geometrics | ||||
| Straight Tubes | max length 35000mm | ||||
ASTM A213 TP304L Stainless Steel U Bend Tube Chemical Composition
| C≤ | Mn≤ | P≤ | S≤ | Si≤ | Cr | Ni |
| 0.035 | 2 | 0.045 | 0.03 | 1 | 18-20 | 8-12 |
Mechanical Property
| Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) | Hardness max | |
| 485min | 170min | 35min | 192HBW/200HV |
90 HRB |
Heat Treatment
ASME SA213 TP304L stainless steel seamless tubing immediately following hot forming may be individually quenched in water or rapidly cooled by other means, provided that the temperature of the tubes after hot forming is not less than the minimum specifified solution temperature (directquenched).
Applications Industry
Pharmaceutical Equipment
Off-Shore Oil Drilling Companies
Chemical Equipment
Power Generation
Sea Water Equipment
Petrochemicals
Heat Exchangers / Condensers / Boiler
Gas Processing
Specialty Chemicals
Pulp and Paper Industry
GNEE Stainless Steel is a specialized manufacturer of Stainless Steel U Bend Tube / Stainless Steel U bent Tubes for U Tube Heat Exchanger (U bent Stainless Steel Tube for U bent Tube Heat Exchanger). Our U Bend Tube Tube-bending production line, installed in 2008. Solution annealing after bending will be processed to lower the residual stress, and followed by Hydrostatic testing/Pneumatic test and Dye Penetrant testing if required.
Our Stainless Steel U bend Tube / U bent Stainless Steel tubes included ASTM A213 ASME SA213 TP304 TP304L TP304H TP316 TP316L TP316Ti TP317 TP317L TP317LMN TP321 TP321H TP347H TP309S TP310S TP310H 904L N08904 254SMo S31254, ASME SA789 S31803 S32205 S32750 S32304 S32760 S32101.
Fully compliant with ASTM A213/ASME SA213 standards, with options for mill test certificates (EN 10204 3.1) and third-party inspection reports to ensure traceability and adherence to international quality requirements.
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